An abyssal plain is an underwater plain on the deep ocean floor, usually found at depths between 3000 and 6000 m. Lying generally between the foot of a continental rise and a mid-ocean ridge, abyssal plains cover more than 50% of the Earth âs surface. They are among the flattest, smoothest and least explored regions on Earth.
Jim Beckwourth. On this day in 1844, Jim Beckwourth discovered a path through the Sierra Nevada Mountains that now bear his name. Beckwourth Pass on U.S. Alt 40 between Reno, Nevada and Sacramento, California made overland travel to the gold fields of California. Tweet.
James Pierson Beckwourth, born James Beckwith and generally known as, Jim Beckwourth (April 26, 1798 or 1800 â October 29, 1866 or 1867) was an American mountain man, fur trader, and explorer. A mulatto born into slavery in Virginia, he was freed by his father (and master) and apprenticed to a blacksmith; later he moved to the American West.